Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcec2aa993fcd9c0…

MALICIOUS

PDF

56.8 KB Created: 2020-08-21 11:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36bc234d8e88bda81b79378ad571f9cd SHA-1: 9f2cb60d9ba419db66c39ac2d0ff304bb7a4d1c7 SHA-256: fcec2aa993fcd9c0f47d8ce1efb580fde76ed6644219273122a0b62362186bbb
200 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566 Phishing

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=command+line+check+android+sdk+version'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, suggesting an attempt to obscure the true malicious destination. The document body also contains instructions that suggest a lure for clipboard command execution or password-protected archive handling, further indicating a social engineering attack designed to trick the user into executing malicious content.

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=command+line+check+android+sdk+version
    • http://junawez.stjca.org/uploads/1/3/0/8/130874575/6074476.pdf
    • http://vinavegi.rootcellargardens.com/uploads/1/3/1/8/131871740/vixonunisomi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3410/7286/files/93467283148.pdf
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/31590837864.pdf
    • https://cdn.shopify.com/s/files/1/0439/1161/0536/files/english_animals_movie.pdf
    • https://cdn.shopify.com/s/files/1/0438/0200/1570/files/pedivuzuwezukinunejero.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/fosunotolilovura.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3861/files/suddenly_20_full_movie_eng_sub.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6284/files/55840345111.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/milagitikapofaxusijixati.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/6936155242.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/78363262005.pdf
    • https://cdn.shopify.com/s/files/1/0450/3588/0598/files/lanurefif.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/annual_credit_report_request.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/pananaliksik_tungkol_sa_asignaturang_filipino.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094b1.bin
b64fc1f274cd78b6daa63823fdb652a7d4c621e2151d67972addc4a6daa88401
pdf-font-stream PDF embedded font (sfnt) at offset 0x94B1 5208 bytes
font_01_sfnt_off0000a635.bin
1425dd89c68f6454e8299b52b9a4e29ec66c903fdab71c89dca6eb4e140f0af2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA635 15588 bytes